A top Evreward merchant since 2005, Hertz offers coupons, cash back rebates and rewards, with savings as high as 55% off. Hertz discount coupons are infrequent, only available a couple times per year, but are often more valuable than similar merchants. Even when Hertz doesn't have a coupon, you can always get up to 16% cash back, and other great rewards, with every purchase.